Phosphor Bronze Fasteners Introduction Phosphor bronze, also known as phosphor-bronze or tin bronze, is an alloy of copper with 0.5–11% tin and 0.01–0.35% phosphorus. The addition of tin increases corrosion resistance and strength, while phosphorus acts as a deoxidizing agent and improves wear resistance and stiffness. These properties make phosphor bronze fasteners ideal for demanding mechanical and marine environments. Phosphor bronze fasteners include bolts, screws, nuts, washers, and rivets used in applications where high strength, corrosion resistance, and electrical conductivity are essential. Uses Phosphor bronze fasteners are commonly used in: Marine and shipbuilding industries: Due to excellent resistance to seawater corrosion. Electrical and electronics: Where non-magnetic and conductive fasteners are required. Aerospace: For components exposed to high mechanical stress and vibration. Chemical plants and refineries: Because of resistance to acids and corrosive chemicals. Automotive and railway: In braking systems and suspension assemblies. Musical instruments and precision equipment: For parts that require elasticity and precision. Chemical Composition Typical chemical composition of phosphor bronze used in fasteners (varies by grade, e.g., C51000, C54400): Element Composition (%) Copper (Cu) 88.0 – 95.0 Tin (Sn) 4.0 – 8.0 Phosphorus (P) 0.03 – 0.35 Zinc (Zn) Up to 1.0 (if any) Iron (Fe) Trace C51000: Often used for fasteners due to its excellent spring qualities and corrosion resistance. Lengths and Sizes Phosphor bronze fasteners are manufactured in various standard and custom sizes. Common dimensions include: Screws and bolts: Diameter from M2 to M24 or #4 to 1 inch, length from 4 mm to 200 mm. Nuts: Correspond to standard screw thread sizes (M2 to M24). Washers: Inner diameter from 2 mm to 30 mm, thickness varies by type. Custom sizes: Available on request depending on application requirements. Fasteners can also be made to ANSI, DIN, ISO, or BS standards depending on industry specifications. Phosphor Bronze Fasteners Supplier Phosphor Bronze Fasteners Manufacturer Phosphor Bronze Fasteners Exporter Phosphor Bronze Fasteners India High Quality Phosphor Bronze Fasteners Phosphor Bronze Screws and Bolts Phosphor Bronze Nuts and Washers Tin Bronze Fasteners Manufacturer Phosphor Bronze Bolts Supplier Marine Grade Phosphor Bronze Fasteners C51000 Phosphor Bronze Fasteners C54400 Phosphor Bronze Fasteners Phosphor Bronze Hex Bolts Phosphor Bronze Machine Screws Phosphor Bronze Threaded Rods Custom Phosphor Bronze Fasteners Industrial Phosphor Bronze Fasteners Phosphor Bronze Fasteners Manufacturer in India Phosphor Bronze Fasteners Exporter from India Phosphor Bronze Fasteners Supplier in Mumbai Global Exporter of Phosphor Bronze Fasteners Wholesale Phosphor Bronze Fasteners India Conclusion Phosphor bronze fasteners offer a unique combination of mechanical strength, corrosion resistance, and electrical conductivity, making them highly suitable for demanding environments such as marine, aerospace, and electronics industries. Their durability, non-magnetic properties, and resistance to wear and fatigue ensure long-lasting performance in both structural and functional applications. Available in a wide range of sizes and specifications, these fasteners are a reliable choice for engineers and manufacturers seeking premium fastening solutions. If you have any requirement, please share your requirement on sales@sagarsteel.net or call us on +91 9920177883